Denture brush



FIG. 1 is a top plan view of a denture brush, showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a left end elevational view thereof;

FIG. 5 is a right end elevational view thereof.

The ornamental design for a denture brush, as shown and described.